Color

#3787f1

#3787f1
hex#3787f1
rgbrgb(55, 135, 241)
hslhsl(214, 87%, 58%)
oklchoklch(0.629 0.177 256.8)
Closest name: dodgerblue (#1e90ff)Relative luminance 0.2449

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#f1a037

#37e5f1 · #4337f1

#f13787 · #87f137

Split-complementary

Open in tool →

#f14337 · #e5f137

#f137e5 · #f1a037 · #37f143

Contrast

#3787f1 as textRatioAAAA largeAAAFix
Aaon white
3.56:1failpassfail
  • AA: use #1171ee as the text (4.54:1)
  • AAA: use #0c53b0 as the text (7.29:1)
  • AA: or shift the background to #212121 (4.52:1)
Aaon black
5.9:1passpassfail
  • AAA: use #5399f3 as the text (7.22:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3787f1 as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Palettes built around it

Fonts for this mood

#3787f1 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3787f1
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #3787f1 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3787f1-9ca9c4-df5a4e-1f1f2d-e9f0f1?lock=0&style=vibrant

Want the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.

Machine-readable: color.md